Air-register for stoves.



No. 65l,667. Patented lune l2, I900. F. V. KNAUSS.

Am REGISTER FOR STOVES.

(Application filed June 10, 1897.)

(No Model.)

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FRANK V. KNAUSS, OF PORTSMOUTH, QHIO.

AIR-REGISTER FOR STOVES.

SPECIFICATION forming part of Letters Patent No. 651,667, dated June 12,1900.

Application filed June 10, 1897. Serial No. 640,171. (No model.)

To (l/ZZ whom it may concern:

Be it known that I, FRANK V. KNAUSS, a citizen of the United States,residing at Portsmouth, in the county of Scioto and'State of Ohio, haveinvented a new and useful Improvement in Air-Registers for Stoves, whichimprovement is fully set forth in the following specification andaccompanyingdrawings, in which Figure 1 is a view of the inner side of astovedoor prepared to receive my improved register-gate; Fig. 2, aperspective View of the gate; Fig.- 3, a vertical section on line 00 a:of Fig. 1, showing the register in open position; Fig. 4, the same Viewshowing the register closed; Fig. 5, a perspective View of the outerside of a stove-door, showing my improved device for operating thegrate; and Fig. 6, a detail view.

Myinvention relates to improved means for shaking the grates of. stoveswithout opening the door of the ash-pit and thereby allowing an excessof air to be supplied to the fuel where such is not desirable; and itsobject is to provide an improved construction of the same which shallpossess superior advantages with respect to efficiency in use.

The invention consists in the novel con struction and combination ofparts hereinafter fully described and claimed.

In the said drawings the reference-numeral 1 designates the door of astove of any ordinary or suitable construction looking from the innerside. This door is formed with a longitudinal opening 2, and on itsinner side at the ends of said opening is provided with two spring-metalstrips 6, secured in place by bolts 7. These strips are made of sheetmetal and comprise inclined lower portions and horizontal upperportions, the junction of said portions forming bearings for thejournals 5 of a damper 3. This damper consists of segmental heads 4,formed integral with said journals, and the curved longitudinal portionformed in its outer side with an ornamental recess, which, however, isnot essential or necessary.

The numeral 8 designates an arm formed integral with the damper, bywhich it may be oscillated and when the damper is opened fits in a notchor slot 9 in the upper edge ofthe slot 2. The damper is also formed witha lug 10, which closes said notch or slot when the damper is closed.

The numeral 12 designates the shaker-bar ofthe grate, the latter notbeing shown, but which may be of any suitable construction. The outerend of this bar is cutaway, forming a lug 13 and studs 14, with which ongage the hooks 14 of a shaker 15.

The operation is as follows: When the damper is closed, no air can enterthe ash-pit. When it is desired to shake the grate, the damper is raisedand the hooked ends of the shaker engaged with the studs of theshakerbar, so that the latter can be reciprocated to free the grate ofashes. It will then be seen that a comparatively-small quantity of aircan enter the ash-pit during the shaking operation. I

By reason of making the bearings for the journals 5 resilient saidbearings serve not only to normally support the damper 3 closely againstthe seat, but also compensate for expansion and contraction of the doorand damper due to the variations in temperature.

Having thus described myinvention, what I claim is-- 1. The combinationwith a stove-door having an opening therein, of the semicylindricaldamper provided with journals at the ends and the resilient bearingsconsisting of springmetal plates secured at the lower ends to the saiddoor and their free ends bent around said journals, substantially asdescribed.

2. The combination with'a stove-door having a longitudinal openingtherein with a notch at the upper edge, of the oscillatorysemicylindrical damper having a handle and an arm, the journals at theend of the damper, and the resilient bearings secured to said door withwhich said journals engage, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand,this 22d day of May, 1897, in the presence of witnesses.

FRANK V. KNAUSS.

Witnesses:

ROBERT E. CALVERT, W. S. TODD.

